func doPrint
  fvar(s,i,pref,old)
  pref = 'arg'
  s = ''
  for(i = 1; i <= _var_count_; i++)
    s &&= (i > 1) ? ', ' : '' && pref + i
  end

  old = block.select(BLK_FUNC)
  println('def ', code(Name), '(self, ', s, '):')
  block.inclvl()
  event(onPrint)
  block.declvl()
  println('')
  block.select(old)
end

func doReturn(data)
  println('return ', data)
end

func Arg(_data, index)
  return('arg' + (index + 1))
end